This manual describes the main features of the TCL NT21A81 TV, including its control panel, audio/video adjustments, timer functions, and built‑in battery operation. It also covers connection options such as AV output, component inputs, and antenna setup.
Safety warnings, battery replacement procedures, and troubleshooting tips for common issues like no sound, picture distortion, or signal interference are provided. The document includes step‑by‑step instructions for channel selection, menu navigation, and using the remote control. This manual is written in Chinese.
| Power supply range | 165W‑250V |
|---|---|
| Operating voltage | 220V‑50Hz |
| Audio/Video inputs | 2 audio/video inputs |
| AV output | 1 AV output connector |
| Audio output power | 5 W RMS + 15 W RMS |
Open the battery compartment, insert two 1.5 V AA batteries with the correct polarity, and close the cover.
Use the specified UHF antenna and aim it toward the broadcast source; an outdoor antenna is recommended in areas with weak signal.
Press the power button; the TV will enter standby and remember the last state for quick resume.
Use the channel up/down buttons on the remote or input the channel number using the numeric keys.